A compound of formula (I) ##STR1## wherein, R.sup.1 is hydrogen, halogen or C.sub.1-6 alkyl; R.sup.2 is a group of formula --CR.sup.3 R.sup.4 (CH.sub.2).sub.p NR.sup.5 COR.sup.6 ; R.sup.3, R.sup.4 and R.sup.5, which may be the same or different, are hydrogen or C.sub.l-6 alkyl; R.sup.6 is C.sub.1-6 alkyl or C.sub.3-7 cycloalkyl; n is an integer of 2, 3 or 4; p is an integer of 1, 2, 3 or 4; and pharmaceutically acceptable salts and solvates thereof. A compound of formula (I) is useful in the treatment of conditions associated with a disturbed functioning of the melatonin system.
公式(I)的化合物##STR1##其中,R.sup.1是氢、卤素或C.sub.1-6烷基;R.sup.2是公式--CR.sup.3R.sup.4(CH.sub.2).sub.pNR.sup.5COR.sup.6的基团;R.sup.3、R.sup.4和R.sup.5可以相同也可以不同,是氢或C.sub.l-6烷基;R.sup.6是C.sub.1-6烷基或C.sub.3-7环烷基;n是2、3或4的整数;p是1、2、3或4的整数;以及其药学上可接受的盐和溶剂合物。公式(I)的化合物在治疗与
褪黑素系统功能紊乱相关的疾病方面具有用处。